Police were called to the property at around 3.20pm on Saturday.
The teenager, who cannot be named for legal reasons, lives elsewhere in the town.
He appeared at Lincoln Magistrates’ Court on Bank Holiday Monday, where he was remanded to appear at Skegness Youth Court this afternoon (Tuesday).
No information is available on the condition of the alleged victim, a 19-year-old male, who suffered a head injury.
• More on this story as we have it.